Why my "Render" viewport shading just looks like Material preview??? even I add the Light point?
You may have &quot;Scene Lights&quot; and &quot;Scene World&quot; unchecked. If unchecked, the Material Preview lighting and reflections appear in your Render Preview:

This can also happen if you connect your materials directly to the material output without a shader, as seen below. If done this way, the material is considered &quot;unshaded&quot; and is thus unaffected by scene lights.